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Unaudited Interim Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive income/(loss) | Accumulated deficit | Total
--- | --- | --- | --- | --- | ---
BALANCE, value at Dec. 31, 2016 | $ 566 | $ 2,063,490 | $ (294) | $ (1,026,532) | $ 1,037,230
BALANCE, shares at Dec. 31, 2016 | 56,628,907 |  |  |  |
Net income / (loss) |  |  |  | (26,229) | (26,229)
Other comprehensive income / (loss) |  |  | 435 |  | 435
Issuance of vested and non-vested shares and amortization of stock-based compensation (Note 11), value | $ 5 | 6,355 |  |  | 6,360
Issuance of vested and non-vested shares and amortization of stock-based compensation (Note 11), shares | 476,300 |  |  |  |
Issuance of common stock, net of issuance costs (Note 8), value | $ 63 | 50,491 |  |  | 50,554
Issuance of common stock (Note 9), shares | 6,310,272 |  |  |  |
BALANCE, value at Jun. 30, 2017 | $ 634 | 2,120,336 | 141 | (1,052,761) | 1,068,350
BALANCE, shares at Jun. 30, 2017 | 63,415,479 |  |  |  |
BALANCE, value at Dec. 31, 2017 | $ 642 | 2,123,108 | 605 | (1,036,303) | 1,088,052
BALANCE, shares at Dec. 31, 2017 | 64,160,004 |  |  |  |
Cumulative effect of accounting change (Note 2) |  |  |  | (1,857) | (1,857)
Net income / (loss) |  |  |  | 20,628 | 20,628
Other comprehensive income / (loss) |  |  | 183 |  | 183
Amortization of stock-based compensation (Note 11) |  | 5,011 |  |  | 5,011
Secondary offering expenses (Note 8) |  | (439) |  |  | (439)
Acquisition of OCC vessels (Note 6), value | $ 33 | 42,929 |  |  | 42,962
Acquisition of OCC vessels (Note 6), shares | 3,304,735 |  |  |  |
BALANCE, value at Jun. 30, 2018 | $ 675 | $ 2,170,609 | $ 788 | $ (1,017,532) | $ 1,154,540
BALANCE, shares at Jun. 30, 2018 | 67,464,739 |  |  |  |

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